Tootfinder

Satellite imagery shows the arrival of advanced F-35 stealth jets in Puerto Rico
as part of a U.S. military buildup amid heightened tensions with Venezuela.
Donald Trump authorized the stationing of 10 F-35 jet fighters in the Caribbean region as part of a broader surge of units aimed at countering drug cartels operating in the region.
The jets so far have not been used in strikes against alleged drug boats originating in Venezuela,
but the firepower is a show of force …

Satellites Show US F-35 Jets in Caribbean as Trump Flexes Muscles at Maduro
Venezuela is ramping up its own military posture as Maduro signals defiance against Trump.

#NorskTut #Norge

A solution of the quantum time of arrival problem via mathematical probability theory
Maik Reddiger
https://arxiv.org/abs/2508.11368 https://arxiv.org/pdf/…

A solution of the quantum time of arrival problem via mathematical probability theory
Time of arrival refers to the time a particle takes after emission to impinge upon a suitably idealized detector surface. Within quantum theory, no generally accepted solution exists so far for the corresponding probability distribution of arrival times. In this work we derive a general solution for a single body without spin impacting on a so called ideal detector in the absence of any other forces or obstacles. A solution of the so called screen problem for this case is also given. We constru…

A Dantzig-Wolfe Reformulation for Automated Aircraft Arrival Routing and Scheduling
Roghayeh Hajizadeh, Tatiana Polishchuk, Elina R\"onnberg, Christiane Schmidt
https://arxiv.org/abs/2509.13065

A Dantzig-Wolfe Reformulation for Automated Aircraft Arrival Routing and Scheduling
We consider the problem of computing aircraft arrival routes in a terminal maneuvering area (TMA) together with an automated scheduling of all the arrivals within a given time interval. The arrival routes are modeled as energy-efficient continuous-descent operations, such that separation based on wake-turbulence categories is guaranteed within the TMA. We propose a new model based on a Dantzig-Wolfe reformulation of a previous model for this problem. As in the previous model, we include tree co…

The Italian port of Ravenna on Thursday refused to load two containers filled with explosives for shipment to Israel,
following a request by local authorities,
according to a statement issued by the city’s municipality.
Ravenna’s mayor, Alessandro Barattoni, said in a statement: 
“Thanks to courageous dockers,
we were informed last night of the scheduled arrival today of two containers to the Ravenna port” 
Ravenna, along with provincial leaders and the re…

Italian port refuses to load containers of explosives bound for Israel
The Italian port of Ravenna on Thursday refused to load two containers filled with explosives for shipment to Israel, following a request by local authorities, according to a statement issued by th…

Online MMS Allocation for Chores
Jiaxin Song, Biaoshuai Tao, Wenqian Wang, Yuhao Zhang
https://arxiv.org/abs/2507.14039 https://arxiv…

Online MMS Allocation for Chores
We study the problem of fair division of indivisible chores among $n$ agents in an online setting, where items arrive sequentially and must be allocated irrevocably upon arrival. The goal is to produce an $α$-MMS allocation at the end. Several recent works have investigated this model, but have only succeeded in obtaining non-trivial algorithms under restrictive assumptions, such as the two-agent bi-valued special case (Wang and Wei, 2025), or by assuming knowledge of the total disutility of e…

Failure Tolerant Phase-Only Indoor Positioning via Deep Learning
Fatih Ayten, Mehmet C. Ilter, Akshay Jain, Ossi Kaltiokallio, Jukka Talvitie, Elena Simona Lohan, Henk Wymeersch, Mikko Valkama
https://arxiv.org/abs/2508.14739

Failure Tolerant Phase-Only Indoor Positioning via Deep Learning
High-precision localization turns into a crucial added value and asset for next-generation wireless systems. Carrier phase positioning (CPP) enables sub-meter to centimeter-level accuracy and is gaining interest in 5G-Advanced standardization. While CPP typically complements time-of-arrival (ToA) measurements, recent literature has introduced a phase-only positioning approach in a distributed antenna/MIMO system context with minimal bandwidth requirements, using deep learning (DL) when operatin…

Our almost new car was delivered (from Goulburn) a couple of hours ago. Husband is sitting in it working out how everything in newfangled cars work.
Our old car, an almost 18 year old Getz, was a very basic manual. This one is a hybrid and has screens and cameras and such like. Husband has been YouTubing in preparation for its arrival.
It's been quite interesting looking for a new car for the past few months. I wanted an EV, husband definitely didn't, so we compromised o…

The effect of uncertainties in reproducing the ambient solar wind at Earth on forecasting CME arrival times
Syed Raza, Talwinder Singh, Nikolai Pogorelov
https://arxiv.org/abs/2508.11217

The effect of uncertainties in reproducing the ambient solar wind at Earth on forecasting CME arrival times
Coronal Mass Ejections (CMEs) are the major drivers of Space Weather (SWx), so predicting their arrival at Earth is a major aspect of SWx forecasting. Despite increasingly complex models proposed over the past decades, the mean absolute error (MAE) for predictions of CME arrival still surpasses 10 hours. In this study, we use machine learning (ML) techniques trained on the discrepancies between observed and modeled solar wind (SW) at the L1 point, upstream of CMEs, to quantify and ''correct'' t…

Update on the intermediate arrival-direction analyses of the Pierre Auger Observatory
Lorenzo Apollonio (for the Pierre Auger Collaboration)
https://arxiv.org/abs/2507.08544

Update on the intermediate arrival-direction analyses of the Pierre Auger Observatory
We present an update on the arrival-direction analyses conducted on intermediate angular scales using the complete Phase I data of the Pierre Auger Observatory up to the end of $2022$ with a total exposure of $135{,}000\,\text{km}^2\,\text{sr}\,\text{yr}$. We show the arrival-direction distribution of the ultra-high-energy cosmic rays along the supergalactic plane above $20\,\text{EeV}$, and an update in the search for magnetically-induced signatures in the arrival directions. Furthermore, we p…

RadioDiff-3D: A 3D$\times$3D Radio Map Dataset and Generative Diffusion Based Benchmark for 6G Environment-Aware Communication
Xiucheng Wang, Qiming Zhang, Nan Cheng, Junting Chen, Zezhong Zhang, Zan Li, Shuguang Cui, Xuemin Shen
https://arxiv.org/abs/2507.12166

RadioDiff-3D: A 3D$\times$3D Radio Map Dataset and Generative Diffusion Based Benchmark for 6G Environment-Aware Communication
Radio maps (RMs) serve as a critical foundation for enabling environment-aware wireless communication, as they provide the spatial distribution of wireless channel characteristics. Despite recent progress in RM construction using data-driven approaches, most existing methods focus solely on pathloss prediction in a fixed 2D plane, neglecting key parameters such as direction of arrival (DoA), time of arrival (ToA), and vertical spatial variations. Such a limitation is primarily due to the relian…

MASSLOC: A Massive Sound Source Localization System based on Direction-of-Arrival Estimation
Georg K. J. Fischer, Thomas Schaechtle, Moritz Schabinger, Alexander Richter, Ivo H\"aring, Fabian H\"oflinger, Stefan J. Rupitsch
https://arxiv.org/abs/2508.12024

MASSLOC: A Massive Sound Source Localization System based on Direction-of-Arrival Estimation
Acoustic indoor localization offers the potential for highly accurate position estimation while generally exhibiting low hardware requirements compared to Radio Frequency (RF)-based solutions. Furthermore, angular-based localization significantly reduces installation effort by minimizing the number of required fixed anchor nodes. In this contribution, we propose the so-called MASSLOC system, which leverages sparse two-dimensional array geometries to localize and identify a large number of concu…

A simple, flexible method for timing cross-calibration of space missions
Matteo Bachetti (INAF-Osservatorio Astronomico di Cagliari), Yukikatsu Terada (Graduate School of Science and Engineering, Saitama University, Japan Aerospace Exploration Agency, ISAS), Megumi Shidatsu (Ehime University, Graduate School of Science and Engineering), Craig B. Markwardt (X-ray Astrophysics Laboratory, NASA Goddard Space Flight Center), Yong Chen (Key Laboratory of Particle Astrophysics, Institute of …

A simple, flexible method for timing cross-calibration of space missions
The timing (cross-)calibration of astronomical instruments is often done by comparing pulsar times-of-arrival (TOAs) to a reference timing model. In high-energy astronomy, the choice of solar system ephemerides and source positions used to barycenter the photon arrival times has a significant impact on the procedure, requiring a full reprocessing the data each time a new convention is used. Our method, developed as part of the activities of the International Astronomical Consortium for High Ene…

Movable-Antenna Trajectory Optimization for Wireless Sensing: CRB Scaling Laws over Time and Space
Wenyan Ma, Lipeng Zhu, Rui Zhang
https://arxiv.org/abs/2509.14905 https://

Movable-Antenna Trajectory Optimization for Wireless Sensing: CRB Scaling Laws over Time and Space
In this paper, we present a new wireless sensing system utilizing a movable antenna (MA) that continuously moves and receives sensing signals to enhance sensing performance over the conventional fixed-position antenna (FPA) sensing. We show that the angle estimation performance is fundamentally determined by the MA trajectory, and derive the Cramer-Rao bound (CRB) of the mean square error (MSE) for angle-of-arrival (AoA) estimation as a function of the trajectory for both one-dimensional (1D) a…

Spatial Audio Motion Understanding and Reasoning
Arvind Krishna Sridhar, Yinyi Guo, Erik Visser
https://arxiv.org/abs/2509.14666 https://arxiv.org/pdf/2509…

Spatial Audio Motion Understanding and Reasoning
Spatial audio reasoning enables machines to interpret auditory scenes by understanding events and their spatial attributes. In this work, we focus on spatial audio understanding with an emphasis on reasoning about moving sources. First, we introduce a spatial audio encoder that processes spatial audio to detect multiple overlapping events and estimate their spatial attributes, Direction of Arrival (DoA) and source distance, at the frame level. To generalize to unseen events, we incorporate an a…

AI as a teaching tool and learning partner
Steven Watterson, Sarah Atkinson, Elaine Murray, Andrew McDowell
https://arxiv.org/abs/2509.13899 https://arxiv.…

AI as a teaching tool and learning partner
The arrival of AI tools and in particular Large Language Models (LLMs) has had a transformative impact on teaching and learning and institutes are still trying to determine how to integrate LLMs into education in constructive ways. Here, we explore the adoption of LLM-based tools into two teaching programmes, one undergraduate and one postgraduate. We provided to our classes (1) a LLM-powered chatbot that had access to course materials by RAG and (2) AI-generated audio-only podcasts for each we…

Cowboys UDFA continues impressive camp by stealing the show before Rams' arrival https://www.si.com/nfl/cowboys/news/cowboys-udfa-continues-impressive-camp-by-stealing-the-show-before-rams-arrival

Broncos HC Sean Payton on Troy Franklin making Year 2 jump: 'It's happening, and I'm excited' https://www.nfl.com/news/broncos-hc-sean-payton-on-troy-franklin-making-year-2-jump-it-s-happening-and-i-m-excited…

Online Rounding for Set Cover under Subset Arrivals
Jaros{\l}aw Byrka, Yongho Shin
https://arxiv.org/abs/2507.13159 https://arxiv.org…

Online Rounding for Set Cover under Subset Arrivals
A rounding scheme for set cover has served as an important component in design of approximation algorithms for the problem, and there exists an H_s-approximate rounding scheme, where s denotes the maximum subset size, directly implying an approximation algorithm with the same approximation guarantee. A rounding scheme has also been considered under some online models, and in particular, under the element arrival model used as a crucial subroutine in algorithms for online set cover, an O(log s)-…

from my link log —
Rain of Fire Falling: The crash of American Airlines flight 191.
https://admiralcloudberg.medium.com/rain-of-fire-falling-the-crash-of-american-airlines-flight-191-e17ffc5369e5

Rain of Fire Falling: The crash of American Airlines flight 191
Note: this accident was previously featured in episode 8 of the plane crash series on October 28th, 2017, prior to the series’ arrival on Medium. This article is written without reference to and…

Gradient-Based Inverse Optimization of Atom-Chip Wire Currents for BEC Transport
Naoki Shibuya
https://arxiv.org/abs/2508.11712 https://arxiv.org/pdf/2508.…

Gradient-Based Inverse Optimization of Atom-Chip Wire Currents for BEC Transport
Modulating wire currents to shift a magnetic trap along an atom chip enables smooth contact-free delivery of Bose-Einstein condensates but can deform the confinement profile causing parametric heating and atom loss. We introduce a fast simulation framework based on inverse optimization that, given an initial trap and a predefined trajectory over time, computes a wire current schedule that transports the atoms and restores the trap geometry upon arrival. We assess trap's minimum energy, lateral …

Goldman Sachs CTO Marco Argenti says the bank is "going to start augmenting our workforce with Devin", Cognition's AI coding assistant, as Wall Street adopts AI (Hugh Son/CNBC)
https://www.cnbc.com/2025/07/11/goldman-sachs-auto…

Goldman Sachs is piloting its first autonomous coder in major AI milestone for Wall Street
The arrival of agentic AI at Goldman Sachs, in which programs don't just help with tasks but execute complex jobs, signals a shift on Wall Street.

The Rapid Arrival of Josiah Willard Gibbs's Elementary Principles in Statistical Mechanics in European University Libraries
Hector Giacomini
https://arxiv.org/abs/2509.10732

The Rapid Arrival of Josiah Willard Gibbs's Elementary Principles in Statistical Mechanics in European University Libraries
This note offers an overview of how Josiah Willard Gibbs's Elementary Principles in Statistical Mechanics, published simultaneously in London and New York in 1902, spread through European university libraries. Contrary to the received idea that the circulation of this text was slow, information gathered through direct contacts with numerous academic libraries, together with an examination of Yale University's archives, reveals an unexpectedly rapid material diffusion beginning on 15 March 1902.…

Fluid Antenna Enabled Direction-of-Arrival Estimation Under Time-Constrained Mobility
He Xu, Tuo Wu, Ye Tian, Kangda Zhi, Wei Liu, Baiyang Liu, Hing Cheung So, Naofal Al-Dhahir, Kin-Fai Tong, Chan-Byoung Chae, Kai-Kit Wong
https://arxiv.org/abs/2508.10820

Fluid Antenna Enabled Direction-of-Arrival Estimation Under Time-Constrained Mobility
Fluid antenna (FA) technology has emerged as a promising approach in wireless communications due to its capability of providing increased degrees of freedom (DoFs) and exceptional design flexibility. This paper addresses the challenge of direction-of-arrival (DOA) estimation for aligned received signals (ARS) and non-aligned received signals (NARS) by designing two specialized uniform FA structures under time-constrained mobility. For ARS scenarios, we propose a fully movable antenna configurat…

Coalitions on the Fly in Cooperative Games
Yao Zhang, Indrajit Saha, Zhaohong Sun, Makoto Yokoo
https://arxiv.org/abs/2507.11883 https://

Coalitions on the Fly in Cooperative Games
In this work, we examine a sequential setting of a cooperative game in which players arrive dynamically to form coalitions and complete tasks either together or individually, depending on the value created. Upon arrival, a new player as a decision maker faces two options: forming a new coalition or joining an existing one. We assume that players are greedy, i.e., they aim to maximize their rewards based on the information available at their arrival. The objective is to design an online value di…

Cosmology with supernova Encore in the strong lensing cluster MACS J0138-2155: Time delays & Hubble constant measurement
J. D. R. Pierel, E. E. Hayes, M. Millon, C. Larison, E. Mamuzic, A. Acebron, A. Agrawal, P. Bergamini, S. Cha, S. Dhawan, J. M. Diego, B. L. Frye, D. Gilman, G. Granata, C. Grillo, M. J. Jee, P. S. Kamieneski, A M. Koekemoer, A. K. Meena, A. B. Newman, M. Oguri, E. Padilla-Gonzalez, F. Poidevin, P. Rosati, S. Schuldt, L. G. Strolger, S. H. Suyu, S. Thorp, A. Zitr…

Cosmology with supernova Encore in the strong lensing cluster MACS J0138-2155: Time delays & Hubble constant measurement
Multiply-imaged supernovae (SNe) provide a novel means of constraining the Hubble constant ($H_0$). Such measurements require a combination of precise models of the lensing mass distribution and an accurate estimate of the relative time delays between arrival of the multiple images. Only two multiply-imaged SNe, Refsdal and H0pe, have enabled measurements of $H_0$ thus far. Here we detail the third such measurement for SN Encore, a $z=1.95$ SNIa discovered in JWST/NIRCam imaging. We measure the…

Glitzy new tunnel walk greets Raiders players entering Allegiant Stadium https://www.reviewjournal.com/sports/raiders/glitzy-new-tunnel-walk-greets-raiders-players-entering-allegiant-stadium-3461340/

🐋😊
“In the town of Seldovia, on Kachemak Bay, a 15-foot minke whale was beached on the rocks at low tide, believed to be an incidence of poisoning by an algal bloom that could have killed it in just 20 minutes.
The selfless work from the locals allowed that 20 minutes to become 6 hours, when the tide’s eventual arrival allowed the whale to right itself.”

Beached Whale Faced 6 Hours of Lethal Sun and Dryness, Locals Form Bucket Brigade to Save it
A 15-foot minke whale was beached on the rocks at low tide, believed to be an incidence of poisoning by an algal bloom.

First IACT Waveform Analysis Based on Deep Convolutional Neural Networks Using CTLearn
T. Miener (for the CTAO-LST project), L. Burmistrov (for the CTAO-LST project), B. Lacave (for the CTAO-LST project), A. Cervi\~no (for the CTAO-LST project)
https://arxiv.org/abs/2509.15010

First IACT Waveform Analysis Based on Deep Convolutional Neural Networks Using CTLearn
Imaging atmospheric Cherenkov telescopes (IACTs) detect extended air showers (EASs) generated when very-high-energy (VHE) gamma rays or cosmic rays interact with the Earth's atmosphere. Cherenkov photons produced during an EAS are captured by fast-imaging cameras, which record both the spatial and temporal development of the shower, along with calorimetric data. By analyzing these recordings, the properties of the original VHE particle-such as its type, energy, and direction of arrival-can be r…

Reinforcement Learning-Based Market Making as a Stochastic Control on Non-Stationary Limit Order Book Dynamics
Rafael Zimmer, Oswaldo Luiz do Valle Costa
https://arxiv.org/abs/2509.12456

Reinforcement Learning-Based Market Making as a Stochastic Control on Non-Stationary Limit Order Book Dynamics
Reinforcement Learning has emerged as a promising framework for developing adaptive and data-driven strategies, enabling market makers to optimize decision-making policies based on interactions with the limit order book environment. This paper explores the integration of a reinforcement learning agent in a market-making context, where the underlying market dynamics have been explicitly modeled to capture observed stylized facts of real markets, including clustered order arrival times, non-stati…

State Aware Traffic Generation for Real-Time Network Digital Twins
Enes Koktas, Peter Rost
https://arxiv.org/abs/2509.12860 https://arxiv.org/pdf/2509.1286…

State Aware Traffic Generation for Real-Time Network Digital Twins
Digital twins (DTs) enable smarter, self-optimizing mobile networks, but they rely on a steady supply of real world data. Collecting and transferring complete traces in real time is a significant challenge. We present a compact traffic generator that combines hidden Markov model, capturing the broad rhythms of buffering, streaming and idle periods, with a small feed forward mixture density network that generates realistic payload sizes and inter-arrival times to be fed to the DT. This traffic g…

Age of Information Aided Intelligent Grant-Free Massive Access for Heterogeneous mMTC Traffic
Zhongwen Sun, Wei Chen, Yuxuan Sun, Bo Ai
https://arxiv.org/abs/2509.14503 https://…

Age of Information Aided Intelligent Grant-Free Massive Access for Heterogeneous mMTC Traffic
With the arrival of 6G, the Internet of Things (IoT) traffic is becoming more and more complex and diverse. To meet the diverse service requirements of IoT devices, massive machine-type communications (mMTC) becomes a typical scenario, and more recently, grant-free random access (GF-RA) presents a promising direction due to its low signaling overhead. However, existing GF-RA research primarily focuses on improving the accuracy of user detection and data recovery, without considering the heterog…

Field of View Enhanced Signal Dependent Binauralization with Mixture of Experts Framework for Continuous Source Motion
Manan Mittal, Thomas Deppisch, Joseph Forrer, Chris Le Sueur, Zamir Ben-Hur, David Lou Along, Daniel D. E. Wong
https://arxiv.org/abs/2509.13548

Field of View Enhanced Signal Dependent Binauralization with Mixture of Experts Framework for Continuous Source Motion
We propose a novel mixture of experts framework for field-of-view enhancement in binaural signal matching. Our approach enables dynamic spatial audio rendering that adapts to continuous talker motion, allowing users to emphasize or suppress sounds from selected directions while preserving natural binaural cues. Unlike traditional methods that rely on explicit direction-of-arrival estimation or operate in the Ambisonics domain, our signal-dependent framework combines multiple binaural filters in…

In the Air - Inside of the Window ✈️ 👩‍✈️
在空中 - 窗内 ✈️ 👩‍✈️
📷 Nikon FE
🎞️FOMAPAN Action 400
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

🔊 #NowPlaying on #BBCRadio3:
#TheEarlyMusicShow
- English Satire and Opera in the 18th Century
Hannah French is joined by conductor and musicologist John Andrews to explore English opera from Purcell to the arrival of Handel. Politics and music go very much hand in hand.
Relisten now 👇
https://www.bbc.co.uk/programmes/m001w8tp

alright im going through my old files again and rediscovered a shitty unfinished sci-fi epic poem thing i was writing sometime when i was 14/15/idfk. all i remember about it is that it was gonna keep doing this countdown and changing structure accordingly for a really long time, i was thinking of depicting the character finding love in an ethereal sorta way for the ending, and it was gonna incorporate a enochian number square for some reason.

Meta-training of diffractive meta-neural networks for super-resolution direction of arrival estimation
Songtao Yang, Sheng Gao, Chu Wu, Zejia Zhao, Haiou Zhang, Xing Lin
https://arxiv.org/abs/2509.05926

Meta-training of diffractive meta-neural networks for super-resolution direction of arrival estimation
Diffractive neural networks leverage the high-dimensional characteristics of electromagnetic (EM) fields for high-throughput computing. However, the existing architectures face challenges in integrating large-scale multidimensional metasurfaces with precise network training and haven't utilized multidimensional EM field coding scheme for super-resolution sensing. Here, we propose diffractive meta-neural networks (DMNNs) for accurate EM field modulation through metasurfaces, which enable multidi…

Upon arrival in Australia and some other countries passengers are sprayed with stuff to either disinfect them or kill insects.
And on California highways, upon entering the state, there are agricultural inspection stations to try to block bad bugs and stuff from getting into the state. (There is reason to believe that this system was established as a pretense in order to reduce the flow of "Okies" during the Dust Bowl era.)
Well, now that the anti-vax disease has struc…

🇺🇦 #NowPlaying on #BBC6Music's #FocusBeats
Shatter Hands:
🎵 Alive on Arrival
#ShatterHands
https://urbanwavesrecords.bandcamp.com/album/alive-on-arrival

A profile of WSJ EIC Emma Tucker, who has positioned WSJ as a rival to NYT through investigative journalism, without falling foul of Murdoch's politics (Michael Savage/The Guardian)
https://www.theguardian.com/news/ng-intera

On Recurrence of the Infinite Server Queue
Sergey Foss, Peter Glynn
https://arxiv.org/abs/2509.06075 https://arxiv.org/pdf/2509.06075

On Recurrence of the Infinite Server Queue
This paper concerns the recurrence structure of the infinite server queue, as viewed through the prism of the maximum dater sequence, namely the time to drain the current work in the system as seen at arrival epochs. Despite the importance of this model in queueing theory, we are aware of no complete analysis of the stability behavior of this model, especially in settings in which either or both the inter arrival and service time distributions have infinite mean. In this paper, we fully develop…

Handling out-of-order input arrival in CEP engines on the edge combining optimistic, pessimistic and lazy evaluation
Styliani Kyrama, Anastasios Gounaris
https://arxiv.org/abs/2507.01461

Handling out-of-order input arrival in CEP engines on the edge combining optimistic, pessimistic and lazy evaluation
In Complex Event Processing, handling out-of-order, late, and duplicate events is critical for real-time analytics, especially on resource-constrained devices that process heterogeneous data from multiple sources. We present LimeCEP, a hybrid CEP approach that combines lazy evaluation, buffering, and speculative processing to efficiently handle data inconsistencies while supporting multi-pattern detection under relaxed semantics. LimeCEP integrates Kafka for efficient message ordering, retentio…

A comet's sudden and bright arrival has caught the eye of astronomers around the world.
The newly discovered comet SWAN25B (C/2025 B1) made its first appearance in early September 2025, and although it hasn’t been officially confirmed yet, it’s already turning heads for its brightness and photogenic tail.
https://share.google/Xe…

New comet SWAN25B already bright, but near sunset’s glow

Imaging a moving point source in R^3 from the time of arrival at sparse observation points
Guanqiu Ma, Haonan Zhang, Hongxia Guo
https://arxiv.org/abs/2507.20204 https://…

Imaging a moving point source in R^3 from the time of arrival at sparse observation points
In this paper, we introduce a novel numerical method for reconstructing the trajectory within three-dimensional space, where both the emission moment and spatial location of the point source are unknown. Our approach relies solely on measuring the time of arrival at five or seven properly chosen observation points. By utilizing the distinctive geometric configuration of these five or seven observation points, we establish the uniqueness of the trajectory and emission moment of the point source …

Commanders' Kliff Kingsbury laments Terry McLaurin absence, others as offense struggles to find rhythm https://www.nfl.com/news/kliff-kingsbury-terry-mclaurin-absence-commanders-offense-struggles

Quadrotor Navigation using Reinforcement Learning with Privileged Information
Jonathan Lee, Abhishek Rathod, Kshitij Goel, John Stecklein, Wennie Tabib
https://arxiv.org/abs/2509.08177

Quadrotor Navigation using Reinforcement Learning with Privileged Information
This paper presents a reinforcement learning-based quadrotor navigation method that leverages efficient differentiable simulation, novel loss functions, and privileged information to navigate around large obstacles. Prior learning-based methods perform well in scenes that exhibit narrow obstacles, but struggle when the goal location is blocked by large walls or terrain. In contrast, the proposed method utilizes time-of-arrival (ToA) maps as privileged information and a yaw alignment loss to gui…

Different arrival times of CM and CI-like bodies from the outer Solar System to the asteroid belt
Sarah E. Anderson, Pierre Vernazza, Miroslav Bro\v{z}
https://arxiv.org/abs/2507.22649

Different arrival times of CM and CI-like bodies from the outer Solar System to the asteroid belt
Understanding the provenance of CI and CM chondrites, the most primitive materials in our meteorite collections, is critical for shedding light on the Solar System's early evolution and contextualizing findings from recent sample return missions. Here we show that the parent bodies of CM chondrites originate from the Saturn formation region, whereas those of CI chondrites originate essentially from the primordial trans-Uranian disk. Using Nbody simulations to investigate the effect of giant pla…

Latent Acoustic Mapping for Direction of Arrival Estimation: A Self-Supervised Approach
Adrian S. Roman, Iran R. Roman, Juan P. Bello
https://arxiv.org/abs/2507.07066

Latent Acoustic Mapping for Direction of Arrival Estimation: A Self-Supervised Approach
Acoustic mapping techniques have long been used in spatial audio processing for direction of arrival estimation (DoAE). Traditional beamforming methods for acoustic mapping, while interpretable, often rely on iterative solvers that can be computationally intensive and sensitive to acoustic variability. On the other hand, recent supervised deep learning approaches offer feedforward speed and robustness but require large labeled datasets and lack interpretability. Despite their strengths, both me…

After being battered by Ukraine, Russia hopes to 'strengthen' Black Sea Fleet: https://benborges.xyz/2025/07/26/after-being-battered-by-ukraine.html

Um petroleiro chamado... Vilamoura?! 🤪
https://mstdn.social/@Free_Press/114777787333496781

Aure Free Press :verified: (@Free_Press@mstdn.social)
Attached: 1 image A tanker that called at the Russian ports suffered an explosion while near Libya The Vilamoura, hauling 1 million barrels of oil, is being towed to Greece, where damage will be assessed upon arrival. The cause of the blast is unclear, but it caused water intake and the vessel's engine room is flooded. Four other vessels have suffered explosions this year, all had recently docked at Russian ports #AureFreePress #News #press #headline #Ukraine #Russia #Putin #EU #NATO

Took the new #nightjet yesterday from Vienna > Amersfoort. Very new train, but still with a number of teething issues. An on-board technician tried to solve e.g. sliding doors that wouldn’t open. Some problems couldn’t be fixed (one cabin’s keycard didn’t work, person was moved to a free cabin, my neighbour’s cabin wouldn’t properly lock).
Huge delay (170 minutes) - that I partly expect…

Troops will get stuck with more litter patrol. What a way to demean the troops by sticking them with garbage detail...
Chicago appears resigned to fate and is prepping for federal troop arrival - and it could happen next week | The Independent
https://www.independent.co.uk/news/world/americas/us-politics/chicago-federal-troops-immigration-raid-trump-b2816535.html

Direction of Arrival Estimation with Virtual Antenna Array Using FMCW Radar Simulated Data
Emre Kurtoglu, Mohammad Mahbubur Rahman
https://arxiv.org/abs/2508.07513 https://

Direction of Arrival Estimation with Virtual Antenna Array Using FMCW Radar Simulated Data
The FMCW radars are widely used for automotive radar systems. The basic idea for FMCW radars is to generate a linear frequency ramp as transmit signal. The difference frequency, (i.e., beat frequency) between the transmitted and received signal is determined after down conversion. The FFT operation on beat frequency signal can recognize targets at different range and velocity. Increasing demand on safety functionality leads to the Direction of Arrival (DOA) estimation to resolve two closely loc…

What's the point of installing an electronic timetable on a small train stop? Next to the paper one, of course. The kind that only displays the planned timetable, not the current departures. And of course the arrival platform is announced via loudspeakers after the barriers are closed.
#rail

Incremental Averaging Method to Improve Graph-Based Time-Difference-of-Arrival Estimation
Klaus Br\"umann, Kouei Yamaoka, Nobutaka Ono, Simon Doclo
https://arxiv.org/abs/2507.07087

Incremental Averaging Method to Improve Graph-Based Time-Difference-of-Arrival Estimation
Estimating the position of a speech source based on time-differences-of-arrival (TDOAs) is often adversely affected by background noise and reverberation. A popular method to estimate the TDOA between a microphone pair involves maximizing a generalized cross-correlation with phase transform (GCC-PHAT) function. Since the TDOAs across different microphone pairs satisfy consistency relations, generally only a small subset of microphone pairs are used for source position estimation. Although the s…

This is one of the most beautiful essays I’ve read all year.
“But while I've always suspected that AI is about a denial of death, in the aftermath of the traumatic and unexpected arrival of the Real, I feel this even more deeply. AI promises an illusion of steady continuity in a world full of unexpected redirection. Nothing shatters that illusion of perpetuity like the sudden death of someone you love.”
Wow wow wow wow. I’m crying in public reading it and couldn’t care less. https://mastodon.social/@antisomniac/114892553894128252

Information Field Theory based Event Reconstruction for Cosmic Ray Radio Detectors
Simon Str\"ahnz, Tim Huege, Torsten En{\ss}lin, Karen Terveer, Anna Nelles
https://arxiv.org/abs/2507.10738

Information Field Theory based Event Reconstruction for Cosmic Ray Radio Detectors
Detection of extensive air showers with radio antennas is an appealing technique in cosmic ray physics. However, because of the high level of measurement noise, current reconstruction methods still leave room for improvement. Furthermore, reconstruction efforts typically focus only on a single aspect of the signal, such as the energy fluence or arrival time. Bayesian inference is then a natural choice for a holistic approach to reconstruction, yet, this problem would be ill-posed, since the ele…

On the Fast-radio-burst-associated X-ray Bursts: Inverse Compton Scattering of Radio Photons by an Extreme Pair Flow During Magnetosphere Activities
Yue Wu, Yuan-Pei Yang, Fa-Yin Wang, Zi-Gao Dai
https://arxiv.org/abs/2507.12405

On the Fast-radio-burst-associated X-ray Bursts: Inverse Compton Scattering of Radio Photons by an Extreme Pair Flow During Magnetosphere Activities
The Galactic fast radio burst (FRB) FRB 200428 was associated with a short X-ray burst (XRB) from the magnetar SGR J1935+2154 during one of its active phases. This FRB-associated XRB exhibits distinct properties compared to other typical XRBs, including a significantly higher cutoff energy and a steeper power-law index. Its recovered X-ray light curve shows a multiple-peak structure, with the time of arrival offset from that of the FRB. These unique features imply a special physical link betwee…

Angle Estimation of a Single Source with Massive Uniform Circular Arrays
Mingyan Gong
https://arxiv.org/abs/2507.13086 https://arxiv.…

Angle Estimation of a Single Source with Massive Uniform Circular Arrays
Estimating the directions of arrival (DOAs) of incoming plane waves is an essential topic in array signal processing. Widely adopted uniform linear arrays can only provide estimates of source azimuth. Thus, uniform circular arrays (UCAs) are attractive in that they can provide $360^{\circ}$ azimuthal coverage and additional elevation angle information. Considering that with a massive UCA, its polar angles of array sensors can approximately represent azimuth angles over $360^{\circ}$ using angle…

I love that one of the accompanying images of the #OpenStreetMap blog post announcing the arrival of the official vector tiles on the OSM website is a map of #Manila’s old Spanish walled city of Intramuros.

Raiders Sign Former Saints Leading WR, Cut Ex-Patriot Who Spent 1 Week on Team https://heavy.com/sports/nfl/las-vegas-raiders/marquez-callaway-signing-kawaan-baker-roster/?adt_ei=[email]

The Supermarket Model on a Dynamic Regular Hypergraph
John Fernley, Bal\'azs Gerencs\'er
https://arxiv.org/abs/2507.03931 https://

The Supermarket Model on a Dynamic Regular Hypergraph
The supermarket model is a system of $n$ queues each with serving rates $1$ and arrival rates $λ$ per vertex, where tasks will move on arrival to the shortest adjacent queue. We consider the supermarket model in the small $λ$ regime on a large dynamic configuration hypergraph with stubs swapping their hyperedge membership at rate $κ$. This interpolates previous investigations of the supermarket model on static graphs of bounded degree (where an exponential tail produces a logarithmic queue…

Attenuation of the ultra-high-energy neutrino flux by dark matter scatterings
Ivan Esteban, Alejandro Ibarra
https://arxiv.org/abs/2508.02869 https://arxiv…

Attenuation of the ultra-high-energy neutrino flux by dark matter scatterings
A flux of ultra-high-energy (UHE) neutrinos is generally expected to be produced by astrophysical sources at cosmological distances and to reach Earth. In this paper, we investigate the impact of neutrino scattering with dark matter (DM) particles in both the intergalactic medium and the Milky Way on the total flux, energy spectrum, and arrival directions of UHE neutrinos. We emphasize the complementarity of neutrino detectors at different latitudes to probe the anisotropy in the flux at Earth …

Competitive Online Transportation Simplified
Stephen Arndt, Benjamin Moseley, Kirk Pruhs, Marc Uetz
https://arxiv.org/abs/2508.08381 https://arxiv.org/pdf/…

Competitive Online Transportation Simplified
The setting for the online transportation problem is a metric space $M$, populated by $m$ parking garages of varying capacities. Over time cars arrive in $M$, and must be irrevocably assigned to a parking garage upon arrival in a way that respects the garage capacities. The objective is to minimize the aggregate distance traveled by the cars. In 1998, Kalyanasundaram and Pruhs conjectured that there is a $(2m-1)$-competitive deterministic algorithm for the online transportation problem, matchin…

Nah dran - aber im Zweifelsfall doch lieber Manowar. 😉
#HeavyMetal

Arrival of the Avenger by TRIUMPHER
Listen now on your favorite streaming service. Powered by Songlink/Odesli, an on-demand, customizable smart link service to help you share songs, albums, podcasts and more.

We are on the Monterey Bay and we are now under a tsunami watch as is most of the coast of California, Oregon, and Washington (and probably BC as well.)
Estimated arrival time, if it arrives at all, is around midnight.
We are at about 60' elevation and about two miles from the shore

NFC East WR rankings: George Pickens elevates Dallas Cowboys wide receivers https://www.si.com/nfl/cowboys/news/nfc-east-wr-rankings-george-pickens-elevates-dallas-cowboys-wide-receivers

Joint Time-Position Statistics and Fisher Information in Drift-Diffusion Molecular Channels
Yun-Feng Lo, Yen-Chi Lee
https://arxiv.org/abs/2508.18680 https://

Joint Time-Position Statistics and Fisher Information in Drift-Diffusion Molecular Channels
This letter presents a closed-form characterization of the joint distribution of first arrival time (FAT) and first arrival position (FAP) in diffusion-based molecular communication (MC) systems with drift. Prior studies have investigated FAT modeling via inverse Gaussian distributions [1] and applied FAT statistics for parameter estimation and synchronization tasks [2], [3], while more recent work has characterized FAP for spatial channel analysis [4]. In contrast, we derive an explicit joint …

A 130,000-year-old archaeological site in southern California, USA
The Cerutti Mastodon site is, to our knowledge, the oldest in situ, well-documented archaeological site in North America and, as such, substantially revises the timing of arrival of Homo into the Americas.
https://www.…

Absorbing detectors meet scattering theory
Will Cavendish, Siddhant Das
https://arxiv.org/abs/2509.07518 https://arxiv.org/pdf/2509.07518

Absorbing detectors meet scattering theory
Any proposed solution to the "screen problem" in quantum mechanics -- the challenge of predicting the joint distribution of particle arrival times and impact positions -- must align with the extensive data obtained from scattering experiments. In this paper, we conduct a direct consistency check of the Absorbing Boundary Condition (ABC) proposal, a prominent approach to address the screen problem, against the predictions derived from scattering theory (ST). Through a series of exactly solvable …

Can a gamma-ray dim radio blazar produce a 200-PeV neutrino? The case of PMN J0606$-$0724 and KM3-230213A
Polina Kivokurtseva, Sergey Troitsky
https://arxiv.org/abs/2509.10352 h…

Can a gamma-ray dim radio blazar produce a 200-PeV neutrino? The case of PMN J0606$-$0724 and KM3-230213A
An extremely energetic muon has been recently detected by the Cubic Kilometre Neutrino Telescope (KM3NeT), indicating the observation of a neutrino with the estimated energy of $\left( 2.2^{+5.7}_{-1.0} \right)\times 10^{17}$~eV. Radio blazar PMN~J0606$-$0724, not detected in gamma rays, is located within the reported error region of the neutrino arrival direction, and was flaring at the time of the event. Here we demonstrate that the neutrino could be produced in a photohadronic interaction in…

Streaming Sortformer: Speaker Cache-Based Online Speaker Diarization with Arrival-Time Ordering
Ivan Medennikov, Taejin Park, Weiqing Wang, He Huang, Kunal Dhawan, Jinhan Wang, Jagadeesh Balam, Boris Ginsburg
https://arxiv.org/abs/2507.18446

Streaming Sortformer: Speaker Cache-Based Online Speaker Diarization with Arrival-Time Ordering
This paper presents a streaming extension for the Sortformer speaker diarization framework, whose key property is the arrival-time ordering of output speakers. The proposed approach employs an Arrival-Order Speaker Cache (AOSC) to store frame-level acoustic embeddings of previously observed speakers. Unlike conventional speaker-tracing buffers, AOSC orders embeddings by speaker index corresponding to their arrival time order, and is dynamically updated by selecting frames with the highest score…

Minimal Per-Flow Backlog Bounds at an Aggregate FIFO Server under Piecewise-Linear Arrival Curves
Lukas Wildberger, Anja Hamscher, Jens B. Schmitt
https://arxiv.org/abs/2506.16914

Minimal Per-Flow Backlog Bounds at an Aggregate FIFO Server under Piecewise-Linear Arrival Curves
Network Calculus (NC) is a versatile methodology based on min-plus algebra to derive worst-case per-flow performance bounds in networked systems with many concurrent flows. In particular, NC can analyze many scheduling disciplines; yet, somewhat surprisingly, an aggregate FIFO server is a notoriously hard case due to its min-plus non-linearity. A resort is to represent the FIFO residual service by a family of functions with a free parameter instead of just a single curve. For simple token-bucke…

🇺🇦 #NowPlaying on BBCRadio3's #InTune
George Frideric Handel, Academy of St Martin in the Fields & Neville Marriner:
🎵 Sinfonia, 'Arrival of the Queen of Sheba' (Solomon)
#GeorgeFridericHandel #NevilleMarriner
https://open.spotify.com/track/3DNIbpnUIaAd5SycwpekAB

On the random-time and finite-time ruin probability for widely dependent claim sizes and inter-arrival times
Yang Chen, Zhaolei Cui, Yuebao Wang
https://arxiv.org/abs/2506.18834

On the random-time and finite-time ruin probability for widely dependent claim sizes and inter-arrival times
Using the results of precise large deviation and renewal theory for widely dependent random variables, this paper obtains the asymptotic estimation of the random-time ruin probability and the uniform asymptotic estimation of finite-time ruin probability for a nonstandard renewal risk model, in which both claim sizes and the inter-arrival times of claim sizes are widely dependent.

The Future is Fluid: Revolutionizing DOA Estimation with Sparse Fluid Antennas
He Xu, Tuo Wu, Ye Tian, Ming Jin, Wei Liu, Qinghua Guo, Maged Elkashlan, Matthew C. Valenti, Chan-Byoung Chae, Kin-Fai Tong, Kai-Kit Wong
https://arxiv.org/abs/2508.10826

The Future is Fluid: Revolutionizing DOA Estimation with Sparse Fluid Antennas
This paper investigates a design framework for sparse fluid antenna systems (FAS) enabling high-performance direction-of-arrival (DOA) estimation, particularly in challenging millimeter-wave (mmWave) environments. By ingeniously harnessing the mobility of fluid antenna (FA) elements, the proposed architectures achieve an extended range of spatial degrees of freedom (DoF) compared to conventional fixed-position antenna (FPA) arrays. This innovation not only facilitates the seamless application o…

A composition-informed search for large-scale anisotropy with the Pierre Auger Observatory
G. Golup (for the Pierre Auger Collaboration)
https://arxiv.org/abs/2507.08564

A composition-informed search for large-scale anisotropy with the Pierre Auger Observatory
The large-scale dipolar structure in the arrival directions of ultra-high-energy cosmic rays with energies above $8\,$EeV observed by the Pierre Auger Collaboration is a well-established anisotropy measurement. This anisotropy is understood to be of extragalactic origin, as the maximum of the dipolar component is located ${\sim}115^\circ$ away from the Galactic Center. Cosmic rays interact with background radiation and magnetized regions on their path from their sources to Earth. These interact…

Reconstruction of cosmic-ray properties with GNN in GRAND
Ars\`ene Ferri\`ere (for the GRAND Collaboration), Aur\'elien Benoit-L\'evy (for the GRAND Collaboration)
https://arxiv.org/abs/2507.07541

Reconstruction of cosmic-ray properties with GNN in GRAND
The Giant Radio Array for Neutrino Detection (GRAND) aims to detect and study ultra-high-energy (UHE) neutrinos by observing the radio emissions produced in extensive air showers. The GRANDProto300 prototype primarily focuses on UHE cosmic rays to demonstrate the autonomous detection and reconstruction techniques that will later be applied to neutrino detection. In this work, we propose a method for reconstructing the arrival direction and energy with high precision using state-of-the-art machi…

On the Approximability of Train Routing and the Min-Max Disjoint Paths Problem
Umang Bhaskar, Katharina Eickhoff, Lennart Kauther, Jannik Matuschke, Britta Peis, Laura Vargas Koch
https://arxiv.org/abs/2507.03687

On the Approximability of Train Routing and the Min-Max Disjoint Paths Problem
In train routing, the headway is the minimum distance that must be maintained between successive trains for safety and robustness. We introduce a model for train routing that requires a fixed headway to be maintained between trains, and study the problem of minimizing the makespan, i.e., the arrival time of the last train, in a single-source single-sink network. For this problem, we first show that there exists an optimal solution where trains move in convoys, that is, the optimal paths for any…

Observation of the Shadows of the Moon and Sun Using the Pierre Auger Observatory at an Average Energy of $7\times10^{17}\,$eV
Katar\'ina \v{S}imkov\'a (for the Pierre Auger Collaboration)
https://arxiv.org/abs/2507.08582

Observation of the Shadows of the Moon and Sun Using the Pierre Auger Observatory at an Average Energy of $7\times10^{17}\,$eV
The interaction of cosmic rays with celestial bodies such as the Moon or the Sun produces a shadow in the arrival direction distribution of the cosmic rays reaching the Earth. Such deficits from an isotropic flux have been observed by astroparticle observatories below energies of $10^{15}\,$eV. Above this energy, measurements were limited due to the low number of events as a result of the steeply falling cosmic-ray flux with energy. With more than 10.6 million events recorded during 20 years of…

Matrix Pencil-Based DoA Estimation for Hybrid Receivers in Snapshot-Limited Scenarios
Mona Mostafa, Ramy H. Gohary, Amr El-Keyi, Yahia A. Eldemerdash Ahmed
https://arxiv.org/abs/2507.02132

Matrix Pencil-Based DoA Estimation for Hybrid Receivers in Snapshot-Limited Scenarios
The goal of this paper is to estimate the directions of arrival (DoAs) for hybrid analog/digital (HAD) receivers when the number of snapshots is too small for statistical averaging to be reliable. This goal is achieved in fully-digital receivers by employing the matrix pencil method (MPM). Unfortunately, the MPM cannot be directly applied in HAD receivers because of the entanglement induced by the underlying analog combiners on the output signals. Furthermore, these analog combiners project the…

Location Privacy-Enabled Beamforming in ISAC Scenarios
Umair Ali Khan, Lester Ho, Holger Claussen, Chinmoy Kundu
https://arxiv.org/abs/2508.09882 https://a…

Location Privacy-Enabled Beamforming in ISAC Scenarios
Integrated sensing and communication (ISAC) technology enables simultaneous environmental perception and data transmission in wireless networks; however, it also exposes user location to receivers. In this paper, we introduce a novel beamforming framework guided by the proposed privacy metric direction of arrival obfuscation ratio (DAOR) to protect transmitter location privacy in ISAC scenarios. Unlike previous approaches, we do not suppress the line-of-sight (LOS) component while reshaping the…

NFL News: Micah Parsons sends clear message to Packers after blockbuster trade from Cowboys https://bolavip.com/en/nfl/nfl-news-micah-parsons-sends-clear-message-to-packers-after-blockbuster-trade-from-cowboys

Raiders Could Face Patriots Without Star Player After Injury Update https://heavy.com/sports/nfl/las-vegas-raiders/las-vegas-patriots-christian-gonzalez-update/?adt_ei=[email]

Greedy Dynamic Matching
Nick Arnosti, Felipe Simon
https://arxiv.org/abs/2507.04551 https://arxiv.org/pdf/2507.04551

Greedy Dynamic Matching
We study a foundational model of dynamic matching market with abandonment. This model has been studied by Collina et al (2020) and Aouad and Saritac (2022), and many other papers have considered special cases. We compare the performance of greedy policies -- which identify a set of "acceptable" matches up front, and perform these matches as soon as possible -- to that of an omniscient benchmark which knows the full arrival and departure sequence. We use a novel family of linear programs ($LP^…

On the Resilience of Direction-Shift Keying Against Phase Noise and Short Channel Coherence Time at mmWave Frequencies
Mohaned Chraiti, Ozgur Ercetin, Ali Ghrayeb, Ali Gorcin
https://arxiv.org/abs/2509.01103

On the Resilience of Direction-Shift Keying Against Phase Noise and Short Channel Coherence Time at mmWave Frequencies
The rapid variation of the wireless channel (short channel coherence time) and the phase noise are two prominent concerns in Millimeter-wave (mmWave) and sub-Terahertz systems communication systems. Equalizing the channel effect and tracking the phase noise necessitate dense pilot insertion. Direction-Shift Keying (DSK), a recent variant of Spatial Modulation (SM), addresses these challenges by encoding information in the Direction-of-Arrival (DoA) using a distributed antenna system (DAS), rath…

'I don't see this as adversity,' HC stresses culture, depth after Cowboys trade Parsons https://cowboyswire.usatoday.com/story/sports/nfl/cowboys/2025/08/30/cowboys-brian-schotte…

All-Sky Cosmic-Ray Anisotropy Update at Multiple Energies
Juan Carlos D\'iaz-V\'elez (for the HAWC,IceCube Collaborations), Riya Yogesh Kore (for the HAWC,IceCube Collaborations), Paolo Desiati (for the HAWC,IceCube Collaborations), Ferris Wolf (for the HAWC,IceCube Collaborations)
https://arxiv.org/abs/2507.07070…

All-Sky Cosmic-Ray Anisotropy Update at Multiple Energies
We present preliminary results on an updated full-sky analysis of the cosmic-ray arrival direction distribution with data collected by the High-Altitude Water Cherenkov (HAWC) Observatory and IceCube Neutrino Observatory with complementary field of views covering a large fraction of the sky. This study extends the energy range to higher energies. The HAWC Observatory, located at 19$^{\circ}$N has analyzed 8 years of cosmic-ray data over an energy range between 3.0 TeV and 1.0 PeV and confirms a…

A Differential Evolution Algorithm with Neighbor-hood Mutation for DOA Estimation
Bo Zhou, Kaijie Xu, Yinghui Quan, Mengdao Xing
https://arxiv.org/abs/2507.06020

A Differential Evolution Algorithm with Neighbor-hood Mutation for DOA Estimation
Two-dimensional (2D) Multiple Signal Classification algorithm is a powerful technique for high-resolution direction-of-arrival (DOA) estimation in array signal processing. However, the exhaustive search over the 2D an-gular domain leads to high computa-tional cost, limiting its applicability in real-time scenarios. In this work, we reformulate the peak-finding process as a multimodal optimization prob-lem, and propose a Differential Evolu-tion algorithm with Neighborhood Mutation (DE-NM) to eff…

The source of the cosmic-ray excess in the Centaurus region - constraints on possible candidates, mass composition and cosmic magnetic fields
Teresa Bister
https://arxiv.org/abs/2509.06594

The source of the cosmic-ray excess in the Centaurus region - constraints on possible candidates, mass composition and cosmic magnetic fields
The most significant excess in the arrival directions of ultra-high-energy cosmic rays with energies $\gtrsim40\,\mathrm{EeV}$ is found in the direction of several interesting source candidates, most prominently the nearby radio galaxy Centaurus A. Naturally, Cen A has been suspected to create the anisotropy - but very different scenarios have been proposed. This includes a subdominant source contribution in combination with isotropic background sources, as well as a scenario where Cen A suppli…

Experimental Demonstration of Computational AoA Detection Using Conformal Frequency Diverse Metasurface Antennas
Idban Alamzadeh, Michael Inman, Mohammadreza F. Imani
https://arxiv.org/abs/2507.04178

Experimental Demonstration of Computational AoA Detection Using Conformal Frequency Diverse Metasurface Antennas
Devices that detect angle-of-arrival (AoA) over a wide field of view are crucial for various applications such as wireless communication and navigation. They are often installed on platforms with challenging mechanical and stealth constraints like vehicles, drones, and helmets, where traditional methods -- mechanically rotating antennas or conformal arrays -- tend to be bulky, heavy, and costly. A recent work has proposed a conformal frequency diverse antenna that is designed to produce angular…

Observation of Broadband In-ice Radiation from Impacting High-Energy Cosmic Rays
Philipp Windischhofer (for the ARA Collaboration), Nathaniel Alden (for the ARA Collaboration)
https://arxiv.org/abs/2507.06151

Observation of Broadband In-ice Radiation from Impacting High-Energy Cosmic Rays
We present the first experimental evidence for in-ice radiofrequency emission from high-energy particle cascades developing in the Antarctic ice sheet. In 208 days of data recorded with the phased-array trigger of the Askaryan Radio Array, we detect 13 events with impulsive radiofrequency pulses originating from below the ice surface. Considering only the arrival angles and timing properties, this rate is inconsistent with an a-posteriori background expectation for thermal noise events and on-s…

Tangential Velocity Estimation Using Near-Field Automotive Radar Model
Michael Shifrin, Joseph Tabrikian, Igal Bilik
https://arxiv.org/abs/2509.04692 https://

Tangential Velocity Estimation Using Near-Field Automotive Radar Model
This work investigates the problem of tangential velocity estimation in automotive radar systems, addressing the limitations of conventionally considered models. Conventional automotive radars are usually based on far-field models and estimate the target's range, radial velocity, and direction-of-arrival (DOA) but are not able to estimate the tangential component of the target 2-D velocity, which is a critical parameter for reliable perception of dynamic environments. To address this challenge,…

The Global Cosmic Ray Observatory -- Challenging next-generation multi-messenger astronomy with interdisciplinary research
Toshihiro Fujii (on behalf of the GCOS supporters)
https://arxiv.org/abs/2507.04588

The Global Cosmic Ray Observatory -- Challenging next-generation multi-messenger astronomy with interdisciplinary research
The origin of ultra-high-energy cosmic rays (UHECRs) is one of the most intriguing mysteries in astroparticle physics and high-energy physics. Since UHECRs with light mass compositions are less deflected by the Galactic and extragalactic magnetic fields, their arrival directions are more strongly correlated with their origins. Charged-particle astronomy with UHECRs is hence a potentially viable probe of extremely energetic phenomena in the universe. The Global Cosmic Ray Observatory (GCOS) is a…

UWB TDoA Error Correction using Transformers: Patching and Positional Encoding Strategies
Dieter Coppens, Adnan Shahid, Eli De Poorter
https://arxiv.org/abs/2507.03523

UWB TDoA Error Correction using Transformers: Patching and Positional Encoding Strategies
Despite their high accuracy, UWB-based localization systems suffer inaccuracies when deployed in industrial locations with many obstacles due to multipath effects and non-line-of-sight (NLOS) conditions. In such environments, current error mitigation approaches for time difference of arrival (TDoA) localization typically exclude NLOS links. However, this exclusion approach leads to geometric dilution of precision problems and this approach is infeasible when the majority of links are NLOS. To a…

The ECME Algorithm Using Factor Analysis for DOA Estimation in Nonuniform Noise
Mingyan Gong
https://arxiv.org/abs/2508.02223 https://arxiv.org/pdf/2508.02…

The ECME Algorithm Using Factor Analysis for DOA Estimation in Nonuniform Noise
Maximum likelihood factor analysis has been used for direction of arrival estimation in unknown nonuniform noise and some iterative approaches have been developed. In particular, the Factor Analysis for Anisotropic Noise (FAAN) method proposed by Stoica and Babu has excellent convergence properties. In this letter, the Expectation/Conditional Maximization Either (ECME) algorithm, an extension of the expectation-maximization algorithm, is designed, which has almost the same computational complex…

Joint Frequency-Space Sparse Reconstruction for DOA Estimation under Coherent Sources and Amplitude-Phase Errors
Yutong Chen, Cong Zhou, Changsheng You, Shuo Shi
https://arxiv.org/abs/2509.03983

Joint Frequency-Space Sparse Reconstruction for DOA Estimation under Coherent Sources and Amplitude-Phase Errors
In this letter, we propose a joint frequency-space sparse reconstruction method for direction-of-arrival (DOA) estimation, which effectively addresses the issues arising from the existence of coherent sources and array amplitude-phase errors. Specifically, by using an auxiliary source with known angles, we first construct the real steering vectors (RSVs) based on the spectral peaks of received signals in the frequency domain, which serve as a complete basis matrix for compensation for amplitude…

Efficient DoA Estimation with Hybrid Linear and Rectangular Arrays Using Compact DFT Codebook
Miguel Rivas-Costa, Carlos Mosquera
https://arxiv.org/abs/2509.03488 https://

Efficient DoA Estimation with Hybrid Linear and Rectangular Arrays Using Compact DFT Codebook
Hybrid Analog and Digital (HAD) architectures provide a cost-effective alternative for large-scale antenna arrays, but accurate Direction-of-Arrival (DoA) estimation remains challenging due to limited digital dimensionality and constrained beamforming design. In this work, we propose a HAD architecture that employs Butler matrices to synthesize DFT beams over a uniform linear array. By exploiting the Cauchy-like displacement structure of the beamformed signal, we introduce a second-order statis…